Highest temperature in Houston on July 23?

Platform comparison

Market context

Houston’s temperature at William P. Hobby Airport is measured against a July climatology that is already hot and humid, with average highs in the mid-90s Fahrenheit and frequent rain disrupting the strongest afternoon heating. World Weather Online puts Houston’s July averages at about 77°F to 96°F, which means the market outcome depends less on a rare cold spell than on whether afternoon sunshine, cloud cover and sea-breeze flow allow the day’s peak to reach the upper end of that normal range.[2]

The current 0% crowd-implied probability is best read as a statistical holdover rather than a literal forecast, because the resolution window is still sensitive to same-day weather swings and airport-specific observations. A past Houston example from LocalConditions shows how even a “fog” day can still post a 95°F high, underlining that moderate July heat in the city is not unusual and that the airport reading can stay elevated despite morning humidity or intermittent cloud.[1] For traders, the relevant comparison is not whether Houston can get hot in late July, but whether the day resembles a standard summer afternoon or a muted one with more cloud and rain.

The main catalyst is the day’s evolving weather setup rather than any scheduled event: traders should watch Houston-area forecasts, especially the timing of morning cloud cover, afternoon thunderstorm chances and the sea-breeze boundary, all of which can cap the high temperature at Hobby Airport. With no campaign-style calendar to lean on, the market is effectively pricing a local weather call, and any forecast revision that shifts the expected maximum temperature by a few degrees is the key driver to monitor.[2]

Sources: 1 · 2

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Houston on July 23? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.